Method of regulating the feed force of a drilling device
US6725948B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 2, 2002 |
| Grant date | Apr 27, 2004 |
| Priority date | — |
| Expiry date | Oct 2, 2022 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B7/068
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
In a method of regulating the feed force of a drilling device having a hydrostatic bore hole motor at the end of a linkage provided with a rotary and a feed drive, the feed of the linkage is set as a function of the pressure of the drive fluid for the bore hole motor in such a way that the liquid pressure remains in a predefined range or else remains constant. If the bore hole motor is equipped with an eccentricity for directional boring, for example with an angled housing, then, in addition or else independently of the feed control, directional deviations normally resulting from the linkage torsion can be compensated for by the eccentricity or the linkage being set to a corrected path angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.